What is the air quality trend in Mount Pleasant?

Over the past 8 days, Mount Pleasant had an average AQI of 26 based on station measurements. The worst day was 2026-10-14 with AQI 41.

How is Mount Pleasant air quality measured?

Air quality in Mount Pleasant is measured by ground-level monitoring stations that report PM2.5 and PM10 concentrations hourly. CERNS.IO aggregates readings from nearby stations and converts PM2.5 to the US EPA Air Quality Index (AQI) scale.

Air Quality History for Mount Pleasant, United States

Name: Mount Pleasant Air Quality History
Creator: CERNS.IO
License: https://creativecommons.org/licenses/by/4.0/

Historical PM2.5 and AQI trend from monitoring stations near Mount Pleasant, United States.

Current AQI
Good Station

48 Hours 7 Days 14 Days 20 Days

CSV JSON

Air Quality Index Station

165h

PM2.5 Station

165h · 19 stations

Temperature GFS model

28pt

Precipitation GFS model

mm/day

Daily Summary Station

Date	AQI	Range	PM2.5 avg	Hours	Stations
2026-10-21	26	23–29	6.3 µg/m³	8h	19
2026-10-20	22	12–30	5.2 µg/m³	24h	17
2026-10-19	25	17–33	6.0 µg/m³	24h	19
2026-10-18	18	15–29	4.3 µg/m³	24h	16
2026-10-17	15	11–22	3.6 µg/m³	24h	17
2026-10-16	32	18–56	7.7 µg/m³	24h	18
2026-10-15	30	19–54	7.1 µg/m³	24h	19
2026-10-14	41	36–49	10.0 µg/m³	13h	17

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